Structure, transport and photoconductance of PbS quantum dot monolayers functionalized with a copper phthalocyanine derivative
A. André (Eberhard Karls Universität Tübingen)
C. Theurer (Eberhard Karls Universität Tübingen)
J.D. Lauth (TU Delft - ChemE/Opto-electronic Materials)
S. Maiti (Eberhard Karls Universität Tübingen)
M. Hodas (Eberhard Karls Universität Tübingen)
M. Samadi Khoshkhoo (Eberhard Karls Universität Tübingen)
S. Kinge (Toyota Motor Europe)
A. J. Meixner (Eberhard Karls Universität Tübingen)
F. Schreiber (Eberhard Karls Universität Tübingen)
L.D.A. Siebbeles (TU Delft - ChemE/Opto-electronic Materials)
K. Braun (Eberhard Karls Universität Tübingen)
M. Scheele (Eberhard Karls Universität Tübingen)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
We simultaneously surface-functionalize PbS nanocrystals with Cu 4,4′,4′′,4′′′-tetraaminophthalocyanine and assemble this hybrid material into macroscopic monolayers. Electron microscopy and X-ray scattering reveal a granular mesocrystalline structure with strong coherence between the atomic lattice and the superlattice of nanocrystals within each domain. Terahertz spectroscopy and field-effect transistor measurements indicate efficient coupling of holes throughout the hybrid thin film, in conjunction with a pronounced photoresponse. We demonstrate the potential of this material for optoelectronic applications by fabricating a light-effect transistor.